Display screen or portion thereof with an animated graphical user interface



FIG. 1 is a front view of a first image in a sequence of a first embodiment of a display screen or portion thereof with an animated graphical user interface, showing my new design.

FIG. 2 is a front view of a second image in a sequence of a first embodiment thereof.

FIG. 3 is a front view of a first image in a sequence of a second embodiment of a display screen or portion thereof with an animated graphical user interface, showing my new design.

FIG. 4 is a front view of a second image in a sequence of a second embodiment thereof.

FIG. 5 is a front view of a first image in a sequence of a third embodiment of a display screen or portion thereof with an animated graphical user interface, showing my new design.

FIG. 6 is a front view of a second image in a sequence of a third embodiment thereof.

FIG. 7 is a front view of a first image in a sequence of a fourth embodiment of a display screen or portion thereof with an animated graphical user interface, showing my new design; and,

FIG. 8 is a front view of a second image in a sequence of a fourth embodiment thereof.

The appearance of the transitional image sequentially transitions between the images shown in FIGS. 1 to 2, 3 to 4, 5 to 6, and 7 to 8. The process or period in which one image or portion thereof transitions to another forms no part of any of the claimed designs. The broken lines shown in the form of dash-dot-dash lines, which define the bounds of the claimed design, form no part of the claimed design.

Neither the display screen nor portion thereof nor any aspects of the graphical user interfaces shown in broken lines (including in the form of dash-dash lines) forms any part of any of the claimed designs. In all of the figures, the outermost broken lines forming a dash-dash line pattern represent a display screen or portion thereof, and form no part of any of the claimed designs. 

CLAIM The ornamental design for a display screen or portion thereof with an animated graphical user interface, as shown and described. 